- Remove all rubber grommets from the valve rocker arm cover bolt holes.
- Inspect the rubber grommets, if cracked or torn replace.
Caution: Bodily injury may occur if the cleaning solvent is inhaled or exposed
to the skin.
- Clean the valve rocker arm covers with GM P/N 12346139 (Canadian P/N 88901247) or equivalent.
- Dry the valve rocker arm covers with compressed air.
- Inspect the valve rocker arm covers for damage and replace if necessary.
- Install all rubber grommets into the valve rocker arm covers.